impermeable
not permeable; impassable.
Chemistry, Geology. (of porous substances, rocks, etc.) not permitting the passage of a fluid through the pores, interstices, etc.
Origin of impermeable
1Other words from impermeable
- im·per·me·a·bil·i·ty, im·per·me·a·ble·ness, noun
- im·per·me·a·bly, adverb
Words that may be confused with impermeable
- impermeable , impervious
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
British Dictionary definitions for impermeable
/ (ɪmˈpɜːmɪəbəl) /
(of a substance) not allowing the passage of a fluid through interstices; not permeable
Derived forms of impermeable
- impermeability or impermeableness, noun
- impermeably, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for impermeable
[ ĭm-pûr′mē-ə-bəl ]
Relating to a material through which substances, such as liquids or gases, cannot pass. Some substances, such as some types of contact lenses, are permeable to gas but impermeable to liquid.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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